"Illegal instruction: 4" shows up in OS X Lion
Some C++ application compiled and run seamlessly in OS X Snow Leopard, but I changed recently to OS X Lion, and here, although there is no compilation error, when I try to run it I get the error "Illegal instruction: 4", I have no clue, what could be the reason?
PS:
These are the linking flags I use
-Wl,-stack_size,0x10000000,-stack_addr,0xc0000000
This is the output I get when I do sudo truss executable
setrlimit returned result = -1
SYSCALL(args) = return
getpid(0x0, 0x0, 0x0) = 32993 0
__sysctl(0xBFFFF5EC, 0x3, 0xBFFFF5E8) = 0 0
issetugid(0xBFFFF5EC, 0x3, 0xBFFFF5E8) = 0 0
csops(0x0, 0x0, 0xBFFFF65C) = 0 0
shared_region_check_np(0xBFFFD5E0, 0x0, 0xBFFFF65C) = 0 0
stat64("/usr/lib/dtrace/libdtrace_dyld.dylib\0", 0xBFFFE830, 0xBFFFF65C) = 0 0
open("/usr/lib/dtrace/libdtrace_dyld.dylib\0", 0x0, 0x0) = 3 0
pread(0x3, "\312\376\272\276\0", 0x1000, 0x0) = 4096 0
pread(0x3, "\316\372\355\376\a\0", 0x1000, 0x6000) = 4096 0
mmap(0x4D3000, 0x2000, 0x1, 0x12, 0x3, 0x3) = 0x4D3000 0
mmap(0x4D5000, 0x1000, 0x3, 0x12, 0x3, 0x3) = 0x4D5000 0
mmap(0x4D6000, 0x1EF0, 0x1, 0x12, 0x3, 0x3) = 0x4D6000 0
close(0x3) = 0 0
stat64("/usr/lib/libstdc++.6.dylib\0", 0xBFFFE690, 0x1) = 0 0
stat64("/usr/lib/libgcc_s.1.dylib\0", 0xBFFFE690, 0x1) = 0 0
stat64("/usr/lib/libSystem.B.dylib\0", 0xBFFFE560, 0x1) = 0 0
stat64("/usr/lib/libc++abi.dylib\0", 0xBFFFE5D0, 0x1) = 0 0
stat64("/usr/lib/system/libcache.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libcommonCrypto.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libcompiler_rt.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libcopyfile.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libdispatch.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libdnsinfo.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libdyld.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libkeymgr.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/liblaunch.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libmacho.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libmathCommon.A.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libquarantine.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libremovefile.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libsystem_blocks.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libsystem_c.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libsystem_dnssd.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libsystem_info.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libsystem_kernel.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libsystem_network.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libsystem_notify.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libsystem_sandbox.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libunc.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libunwind.dylib\0", 0xBFFFE360, 0x1) = 0 0
stat64("/usr/lib/system/libxpc.dylib\0", 0xBFFFE360, 0x1) = 0 0
open("/dev/dtracehelper\0", 0x2, 0xBFFFF5B0) = 3 0
ioctl(0x3, 0x80086804, 0xBFFFF540) = 0 0
close(0x3) = 0 0
__sysctl(0xBFFFF1FC, 0x2, 0xBFFFF1F4) = 0 0
bsdthread_register(0x92C9F6BC, 0x92C9F6E0, 0x1000) = 0 0
thread_selfid(0x92C9F6BC, 0x92C9F6E0, 0x1000) = 2500945 0
mmap(0x0, 0x2000, 0x3, 0x1002, 0x1000000, 0xAC308375) = 0x4D8000 0
mprotect(0x4D8000, 0x44, 0x1) = 0 0
mmap(0x0, 0xD000, 0x3, 0x1002, 0x1000000, 0x4D8034) = 0x4DA000 0
mprotect(0x4DA000, 0x1000, 0x0) = 0 0
mprotect(0x4E6000, 0x1000, 0x0) = 0 0
mmap(0x0, 0xD000, 0x3, 0x1002, 0x1000000, 0x4DB000) = 0x4E7000 0
mprotect(0x4E7000, 0x1000, 0x0) = 0 0
mprotect(0x4F3000, 0x1000, 0x0) = 0 0
mmap(0x0, 0x1000, 0x3, 0x1002, 0x1000000, 0x4E8000) = 0x4F4000 0
mprotect(0x4F4000, 0x1000, 0x1) = 0 0
mprotect(0x4D8000, 0x44, 0x3) = 0 0
mmap(0x0, 0x200000, 0x3, 0x1002, 0x7000000, 0x4F4000) = 0x4F5000 0
munmap(0x4F5000, 0xB000) = 0 0
munmap(0x600000, 0xF5000) = 0 0
mprotect(0x4D8000, 0x44, 0x1) = 0 0
getpid(0x4D8000, 0x44, 0x1) = 32993 0
__mac_syscall(0x973E8E8E, 0x2, 0xBFFFF0C8) = 0 0
stat64("/AppleInternal\0", 0xBFFFF130, 0xBFFFF0C8) = -1 Err#2
audit_session_self(0x92C1F4B6, 0xBFFFF130, 0xBFFFF0C8) = 5635 0
geteuid(0x92C1F4B6, 0xBFFFF130, 0xBFFFF0C8) = 0 0
getegid(0x92C1F4B6, 0xBFFFF130, 0xBFFFF0C8) = 0 0
getaudit_addr(0xBFFFF0A8, 0x30, 0xBFFFF0C8) = 0 0
csops(0x80E1, 0x7, 0xBFFFECF8) = 0 0
mmap(0x0, 0x2000, 0x3, 0x1002, 0x1000000, 0xACA5EB00) = 0x4F5000 0
mprotect(0x4F5000, 0x44, 0x1) = 0 0
mmap(0x0, 0xD000, 0x3, 0x1002, 0x1000000, 0x4F5034) = 0x600000 0
mprotect(0x600000, 0x1000, 0x0) = 0 0
mprotect(0x60C000, 0x1000, 0x0) = 0 0
mmap(0x0, 0xD000, 0x3, 0x1002, 0x1000000, 0x601000) = 0x60D000 0
mprotect(0x60D000, 0x1000, 0x0) = 0 0
mprotect(0x619000, 0x1000, 0x0) = 0 0
mprotect(0x4F4000, 0x1000, 0x3) = 0 0
mprotect(0x4F4000, 0x1000, 0x1) = 0 0
mprotect(0x4F5000, 0x44, 0x3) = 0 0
mmap(0x0, 0x200000, 0x3, 0x1002, 0x7000000, 0x4F4004) = 0x61A000 0
munmap(0x61A000, 0xE6000) = 0 0
munmap(0x800000, 0x1A000) = 0 0
mprotect(0x4F5000, 0x44, 0x1) = 0 0
getrlimit(0x1003, 0xBFFFF8DC, 0x1) = 0 0
setrlimit(0x1003, 0xBFFFF8DC, 0x1) = -1 Err#22
getrlimit(0x1008, 0xBF835C60, 0x1) = 0 0
fstat64(0x1, 0xBF836090, 0x1F) = 0 0
mmap(0x0, 0x1000000, 0x3, 0x1002, 0x2000000, 0xACA5B3E0) = 0x800000 0
munmap(0x1000000, 0x800000) = 0 0
PS2: If I remove the previously mentioned linking flag, the program runs, with no error. But when I input real data to the program, then I get
Segmentation fault: 11
I remember that this program had a problem with the stack, so it had to be increased. In Linux I did this and works
const rlim_t kStackSize = 256L * 1024L * 1024L; // min stack size = 64 Mb
struct rlimit rl;
int result;
result = getrlimit(RLIMIT_STACK, &rl);
if (result == 0)
{
if (rl.rlim_cur < kStackSize)
{
rl.rlim_cur = kStackSize;
result = setrlimit(RLIMIT_STACK, &rl);
if (result != 0)
{
fprintf(stderr, "setrlimit returned result = %d\n", result);
}
}
}
but in OS X, since that did not work, I used the previously mentioned linking flag, and had no problem is OS X Snow Leopard, so it seems I still have the stack overflow problem in OS X Lion but the linking flag does not solve this. What could I do?
Answer
I encountered this issue when building a product on Mountain Lion (10.8,) and then running on Lion. (10.7). The cause was that I made some changes to my build environment.
(I'm using mkbundle to ship a product that uses Mono.)
The fix was very simple, I had to tell clang that generated binaries need to work on OSX 10.6. I added the following argument to clang:
-mmacosx-version-min=10.6
Problem solved!